Reminders/calendars for self managing

We self manage our properties and have tried a number of websites such as Cubbi, Rentsmart etc but to be honest I've found it quicker and easier to use Excel to track rent and expenses.

The only missing piece of the puzzle for us is a good reminder/calendar system or app to assist with sending out lease renewals on time and that kind of thing. There are dozens of calendar apps out there but the maximum reminder or notification period is around 4 weeks. Renewals or rent increases might need to be sent out more than 60 days in advance so I need a reminder say 70 days ahead for example (and I could do two reminders but that's a bit of a clunky process).

We really need an app, not desktop software or a website. What do other landlords use for reminder or calendar apps?

We self-managed a little bit and I used the Google Boomerang function to send me emails/reminders/attachments for the right dates. Or I'd never remember (email is what I primarily use). As well as a paper diary, heavily utilising the calendar at the front so I could see everything at a glance/when it's coming up.

Thanks for all the suggestions. I have to admit I'm hopeless with a paper based diary and really rely on pop ups or notifications. I already have the dates worked out using excel like suggested above and will utilise in conjunction with email and calendar to get the result I'm after.

What works for one person may not work for another, just due to familiarity of tools. Sounds like your Excel solution is working for you. Whatever you choose, if you are self-managing just ensure you don't miss important deadlines. Stick within the tenancy laws so you don't run into strife, particularly if you have to prove when you actioned certain things if you ever need to go to the tribunal on a tenancy dispute.